From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michal Simek Subject: [PATCH v2] uio/pdrv_genirq: Add OF support Date: Thu, 14 Apr 2011 11:41:46 +0200 Message-ID: <1302774106-32764-1-git-send-email-monstr@monstr.eu> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: devicetree-discuss@lists.ozlabs.org Cc: grant.likely@secretlab.ca, john.williams@petalogix.com, linux-kernel@vger.kernel.org, hjk@hansjkoch.de, w.sang@pengutronix.de, arnd@arndb.de, Michal Simek List-Id: devicetree@vger.kernel.org Support OF support. "generic-uio" compatible property is used. Signed-off-by: Michal Simek --- v2: Remove additional resource binding Setup correct version string Clear compatible string --- drivers/uio/uio_pdrv_genirq.c | 45 +++++++++++++++++++++++++++++++++++++++++ 1 files changed, 45 insertions(+), 0 deletions(-) diff --git a/drivers/uio/uio_pdrv_genirq.c b/drivers/uio/uio_pdrv_genirq.c index 7174d51..fd84a93 100644 --- a/drivers/uio/uio_pdrv_genirq.c +++ b/drivers/uio/uio_pdrv_genirq.c @@ -23,6 +23,10 @@ #include #include +#include +#include +#include + #define DRIVER_NAME "uio_pdrv_genirq" struct uio_pdrv_genirq_platdata { @@ -97,6 +101,28 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev) int ret = -EINVAL; int i; + if (!uioinfo) { + /* alloc uioinfo for one device */ + uioinfo = kzalloc(sizeof(*uioinfo), GFP_KERNEL); + if (!uioinfo) { + ret = -ENOMEM; + dev_err(&pdev->dev, "unable to kmalloc\n"); + goto bad2; + } + uioinfo->name = pdev->dev.of_node->name; + uioinfo->version = "dt"; + + /* Multiple IRQs are not supported */ + if (pdev->num_resources > 1) { + struct resource *r = &pdev->resource[1]; + uioinfo->irq = r->start; + dev_info(&pdev->dev, "irq %d\n", (u32)uioinfo->irq); + } else { + uioinfo->irq = UIO_IRQ_NONE; + dev_info(&pdev->dev, "no IRQ found\n"); + } + } + if (!uioinfo || !uioinfo->name || !uioinfo->version) { dev_err(&pdev->dev, "missing platform_data\n"); goto bad0; @@ -180,6 +206,10 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev) kfree(priv); pm_runtime_disable(&pdev->dev); bad0: + /* kfree uioinfo for CONFIG_OF */ + if (!pdev->dev.platform_data) + kfree(uioinfo); + bad2: return ret; } @@ -215,6 +245,20 @@ static const struct dev_pm_ops uio_pdrv_genirq_dev_pm_ops = { .runtime_resume = uio_pdrv_genirq_runtime_nop, }; +#ifdef CONFIG_OF +/* + * Empty match table for of_platform binding + * Select your custom compatible string in format + * { .compatible = "", }, + */ +static const struct of_device_id __devinitconst uio_of_genirq_match[] = { + { /* end of list */ }, +}; +MODULE_DEVICE_TABLE(of, uio_of_genirq_match); +#else +# define uio_of_genirq_match NULL +#endif + static struct platform_driver uio_pdrv_genirq = { .probe = uio_pdrv_genirq_probe, .remove = uio_pdrv_genirq_remove, @@ -222,6 +266,7 @@ static struct platform_driver uio_pdrv_genirq = { .name = DRIVER_NAME, .owner = THIS_MODULE, .pm = &uio_pdrv_genirq_dev_pm_ops, + .of_match_table = uio_of_genirq_match, }, }; -- 1.5.5.6